Guard for roller window shades



June 24, 1930. w. B. BOYCE 1,767,045

GUARD FOR ROLLER WINDOW SHADES Filed July 5, 1924 ffwerzz or h WWW/WWW 5 Patented June 24, 1930 UNITED STATES WIRT B. BOYCE, OF CHICAGO, ILLINOIS GUARD FOR ROLLER WINDOW SHADES 7 Application filed July 5,

My invention relates to the shading of windows in which the control of air for ventilation is provided by a plurality of sashes of the guillotine type in adjacent ganes or channels. In windows of this class movement of the upper sash permits currentsof air to pass at the upper part of the window casing; by raising the lower sash, currents pass at the lower portion of the casing; while by slight movement of either or both of said sashes, valuable additional ventilating currents are created between the top and bottom, passing between the adjacent horizontal rails of the two sashes. It is well known that the action of the ordinary single spring roller curtain, when the roller is mounted either at the top or bottom of the window frame, is seriously interfered with and rapid ly destroyed by the currents of air passing through the windows when open or partly open for ventilation. Great advantage has been derived by mounting a plurality of spring shade rollers on the casings between the top. and bottom thereof in such a manner 2 that there is no substantial loss of light, at the point of mounting, against sudden and violent currents of air.

It is one object of my invention to provide an improved rigid and opaque light and air guard for centrally mounted shade roller curtains, and further to provide brackets adapted to support the ends of said guards and the ends of the shade roller bearing supports so as to position said guards and the curtain rollers in proper relation to each other. It is a further object to secure the guard positively in place and yet provide means by which it may be readily removed and replaced, and in which the relatively adjustable parts may be easily made from the chosen materials and readily formed into the desired shape and assembled without difliculty.

The principles of my invention are illusshade; Figs. 4 and 5 are respectively left 1924.."S eria1 No. 724,188.-

and right hand suspending brackets in their substantially normal relation to the shield plece; Flg. 6 is one of a similar pair of bracket's adapted to attachment with the inner finishing pieces of the window casing.

Further describing my invention with ref-, erence to the drawings in which like charac ters' ofreference denote like parts throughout: Numeral 1 'is one of the sliding, sheet metal members ofmy improved light guard; the side edges 2 are turned forwardly and inwardly to provide stiffening ribs 3. A transverse stay piece, as shown in Fig. 3, havmg the body portion 4: and suspending tenon member 5 is attached to the end of member 1 by riveting or, preferably, by spot weldlng. Asecond relatively sliding member '1" having corresponding edges 2 is from sheet metal in such a manner formed that said edges turn over and embrace the corresponding edges of member 1. Said member 1"is also provided with a transverse staypiece, substantially as shown in Fig.

3, and'secured thereto in the same manner as described with reference to member 1.

The two members slide together as illustrated in Fig.1 and the end 6 of member 1 will be received against edge '7' of the body 4 of the stay piece which forms a stop there for. When thus assembled, the device is at its minimum'length. In practice the two parts should be of such relative length that an overlap of'several inches will not affect the rigidity of the structure and that the whole will be in completely rigid relation when mounted as hereinafter described;

1 The supporting brackets, shown in Figs.

4 and 5, are made'inpairs, with the respece tive parts in reversed relation to each other,

and comprise body portions 8 having elongated openings or sockets 9 of such shape and in such proportion as to correspond with the suspending projections or ten'on. members 5 of the light guard." The body portions ;are provided with bifurcations which,.at their respective ends, have bearingopenings 10 and squared retaining openings 11., Said bearing and retaining openings'are in such relation to each other that they will respectively receive thestub shaft at one end of an ordinaryshade roller and the squared or flattened end of the spring shaft. The said brackets are provided with counter sunk openings 12 adapted to take screws by which they are secured in proper relation to the inside pieces of a window casing. hen so secured in position, the suspending tenons 5 on the stay pieces are placed in proper relation to the sockets 9 and by extension the light strip is rigidly and securely placed and fastened in its normal position therein. It will be noted, however, that while the drawings show the light strip with the concave side toward the observer and looking into the room, it may be mounted in the other way with the smooth surface 13 next to the curtains and to the room and with the concave side towards the window sash. Fig. 6 is a bracket in all respects similar to the left hand bracket shown in Fig. 4:, except that retaining lugs 14 are I provided by which the bracket may be secured, if desired, to the outward finishing pieces of the window casing.

I claim:

1. In a guard for roller window shades; a shield piece of sheet metal comprising a plurality of members each having downturned stiffening ribs on their corresponding side edges whereby said members are mutually and slidably engageable, and transverse stiifening pieces rigidly attached'to the non-adjacent ends of said pieces, each of said pieces having a body portion and a suspending 'tenon.

2. In a guard for roller window shades;

Y a shield piece of sheet metal comprising a plurality of members each having downturned stiffening ribs on their corresponding edges, whereby said members are mutually and slidably engageable, transverse stay pieces extending across the non-adjacent ends of said members and rigidly secured thereto, and rigidly attached suspending tenons on said stay pieces. a

3. In a light guard for roller window shades, a shield piece of sheet metal comprising a plurality of relatively short members each having down-turned stiffening ribs on its" corresponding side edges whereby said members aremutually and slidably en- 1 gageable, stay pieces on the ends of said members extending transversely thereof, and provided with rigidly attached tenons extendable with the stifiening members on substantially the center line of said light guard.

In witness whereof I have hereunto set my hand at Chicago, Cook County, Illinois,

this 2nd day of July,

WIRT B. BOYCE. 

